Ubuntu Linux

How to Enable Automatic Brightness in Ubuntu Linux

Richard
Written by
Richard
Aug 31, 2022 Updated Mar 19, 2026 3 min read

This post describes steps to turn On or Off adaptive or automatic brightness in Ubuntu Linux.

Ubuntu Linux will adjust the screen’s brightness based on the surrounding lighting conditions, particularly laptops with advanced graphics cards and integrated light sensors.

With adaptive brightness enabled, Ubuntu Linux provides optimal brightness and contrast levels while saving power and providing longer battery life.

Whether in a dark room or in direct sunlight, automatic brightness will adjust the screen and display the content in readable settings. This ensures that the screen is always easy to see in different ambient light conditions and helps to reduce battery consumption.

How to enable or disable automatic brightness in Ubuntu Linux

As mentioned above, in laptops with advanced graphics cards and integrated light sensors, Ubuntu Linux automatically adjusts the screen’s brightness based on the surrounding lighting conditions.

Below is how to enable or disable adaptive brightness in Ubuntu Linux.

Ubuntu Linux has a centralized location for the majority of its settings. From system configurations to creating new users and updating, all can be done from the System Settings panel.

To get to System Settings, open the Activities overview and start typing Settings.

Ubuntu Linux Activities overview for settings access

Alternatively, click on the System menu at the top-right corner of the top bar on your desktop.

On the System menu, select Settings as highlighted below

Ubuntu Linux system menu showing settings option

In the Settings app, click on Power tile to expand.

In the Power Saving section, ensure that the Automatic Screen Brightness switch is set to the On position to enable.

To disable automatic screen brightness, switch it to Off.

Adaptive brightness settings in Ubuntu Linux

That should do it! You can now close the settings app.

Conclusion:

  • Ubuntu Linux’s adaptive brightness feature adjusts the screen’s brightness based on surrounding lighting conditions, providing optimal brightness and contrast levels while saving power and prolonging battery life.
  • Enabling automatic brightness ensures the screen is always easy to see in different ambient light conditions and helps reduce battery consumption.
  • To enable or disable automatic brightness in Ubuntu Linux, access the System Settings panel, navigate to the Power section, and toggle the Automatic Screen Brightness switch to the desired position.

This post provides a clear and straightforward guide for managing adaptive and automatic brightness settings in Ubuntu Linux, enhancing the user experience and energy efficiency.

Frequently Asked Questions

How do I enable automatic brightness in Ubuntu Linux?

To enable automatic brightness in Ubuntu Linux, open the Settings app from the Activities overview or System menu. Navigate to the Power section and toggle the Automatic Screen Brightness switch to the On position.

Can I disable automatic brightness in Ubuntu Linux?

Yes, you can disable automatic brightness in Ubuntu Linux. Simply go to the Settings app, click on the Power tile, and switch the Automatic Screen Brightness option to Off.

What is adaptive brightness in Ubuntu Linux?

Adaptive brightness in Ubuntu Linux automatically adjusts the screen's brightness based on surrounding lighting conditions. This feature helps improve visibility and conserve battery life, especially on laptops with light sensors.

Why is my screen brightness not adjusting automatically in Ubuntu?

If your screen brightness is not adjusting automatically in Ubuntu, ensure that your device has a compatible light sensor and that the Automatic Screen Brightness option is enabled in the Power settings.

Does enabling automatic brightness save battery life in Ubuntu Linux?

Yes, enabling automatic brightness in Ubuntu Linux can save battery life. By adjusting the screen brightness based on ambient light, it helps reduce power consumption while maintaining optimal visibility.

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Richard

About the Author

Richard

Tech Writer, IT Professional

Richard, the owner and lead writer at Geek Rewind, is a tech enthusiast passionate about simplifying complex IT topics. His years of hands-on experience in system administration and enterprise IT operations have honed his ability to provide practical insights and solutions. Richard aims to make technology more accessible and actionable. He's deeply committed to the Geek Rewind community, always ready to answer questions and engage in discussions.

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